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src/share/vm/classfile/classFileParser.hpp@3b2dea75431e (annotated)

src/share/vm/classfile/classFileParser.hpp

Sat, 30 Oct 2010 13:08:23 -0700

author

jrose

date

Sat, 30 Oct 2010 13:08:23 -0700

changeset 2268

3b2dea75431e

parent 2264

d2e35ffae982

child 2314

f95d63e2154a

permissions

-rw-r--r--

6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti

duke@435	1	/*
twisti@2264	2	* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// Parser for for .class files
duke@435	26	//
duke@435	27	// The bytes describing the class file structure is read from a Stream object
duke@435	28
duke@435	29	class ClassFileParser VALUE_OBJ_CLASS_SPEC {
duke@435	30	private:
duke@435	31	bool _need_verify;
duke@435	32	bool _relax_verify;
duke@435	33	u2 _major_version;
duke@435	34	u2 _minor_version;
duke@435	35	symbolHandle _class_name;
jrose@1145	36	KlassHandle _host_klass;
jrose@866	37	GrowableArray<Handle>* _cp_patches; // overrides for CP entries
duke@435	38
duke@435	39	bool _has_finalizer;
duke@435	40	bool _has_empty_finalizer;
duke@435	41	bool _has_vanilla_constructor;
duke@435	42
duke@435	43	enum { fixed_buffer_size = 128 };
duke@435	44	u_char linenumbertable_buffer[fixed_buffer_size];
duke@435	45
duke@435	46	ClassFileStream* _stream; // Actual input stream
duke@435	47
duke@435	48	enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
duke@435	49
duke@435	50	// Accessors
duke@435	51	ClassFileStream* stream() { return _stream; }
duke@435	52	void set_stream(ClassFileStream* st) { _stream = st; }
duke@435	53
duke@435	54	// Constant pool parsing
duke@435	55	void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS);
duke@435	56
duke@435	57	constantPoolHandle parse_constant_pool(TRAPS);
duke@435	58
jrose@2268	59	static int start_operand_group(GrowableArray<int>* &operands, int op_count, TRAPS);
jrose@2268	60	static void store_operand_array(GrowableArray<int>* operands, constantPoolHandle cp, TRAPS);
jrose@2268	61
duke@435	62	// Interface parsing
duke@435	63	objArrayHandle parse_interfaces(constantPoolHandle cp,
duke@435	64	int length,
duke@435	65	Handle class_loader,
duke@435	66	Handle protection_domain,
duke@435	67	symbolHandle class_name,
duke@435	68	TRAPS);
duke@435	69
duke@435	70	// Field parsing
duke@435	71	void parse_field_attributes(constantPoolHandle cp, u2 attributes_count,
duke@435	72	bool is_static, u2 signature_index,
duke@435	73	u2* constantvalue_index_addr,
duke@435	74	bool* is_synthetic_addr,
duke@435	75	u2* generic_signature_index_addr,
duke@435	76	typeArrayHandle* field_annotations, TRAPS);
duke@435	77	typeArrayHandle parse_fields(constantPoolHandle cp, bool is_interface,
duke@435	78	struct FieldAllocationCount *fac,
duke@435	79	objArrayHandle* fields_annotations, TRAPS);
duke@435	80
duke@435	81	// Method parsing
duke@435	82	methodHandle parse_method(constantPoolHandle cp, bool is_interface,
duke@435	83	AccessFlags* promoted_flags,
duke@435	84	typeArrayHandle* method_annotations,
duke@435	85	typeArrayHandle* method_parameter_annotations,
duke@435	86	typeArrayHandle* method_default_annotations,
duke@435	87	TRAPS);
duke@435	88	objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface,
duke@435	89	AccessFlags* promoted_flags,
duke@435	90	bool* has_final_method,
duke@435	91	objArrayOop* methods_annotations_oop,
duke@435	92	objArrayOop* methods_parameter_annotations_oop,
duke@435	93	objArrayOop* methods_default_annotations_oop,
duke@435	94	TRAPS);
duke@435	95	typeArrayHandle sort_methods (objArrayHandle methods,
duke@435	96	objArrayHandle methods_annotations,
duke@435	97	objArrayHandle methods_parameter_annotations,
duke@435	98	objArrayHandle methods_default_annotations,
duke@435	99	TRAPS);
duke@435	100	typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length,
duke@435	101	constantPoolHandle cp, TRAPS);
duke@435	102	void parse_linenumber_table(
duke@435	103	u4 code_attribute_length, u4 code_length,
duke@435	104	CompressedLineNumberWriteStream** write_stream, TRAPS);
duke@435	105	u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
duke@435	106	constantPoolHandle cp, u2* localvariable_table_length,
duke@435	107	bool isLVTT, TRAPS);
duke@435	108	u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
duke@435	109	constantPoolHandle cp, TRAPS);
duke@435	110	void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
duke@435	111	u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
duke@435	112	typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS);
duke@435	113
duke@435	114	// Classfile attribute parsing
duke@435	115	void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
duke@435	116	void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
duke@435	117	instanceKlassHandle k, int length, TRAPS);
duke@435	118	u2 parse_classfile_inner_classes_attribute(constantPoolHandle cp,
duke@435	119	instanceKlassHandle k, TRAPS);
duke@435	120	void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
duke@435	121	void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
duke@435	122	void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
duke@435	123
duke@435	124	// Annotations handling
duke@435	125	typeArrayHandle assemble_annotations(u1* runtime_visible_annotations,
duke@435	126	int runtime_visible_annotations_length,
duke@435	127	u1* runtime_invisible_annotations,
duke@435	128	int runtime_invisible_annotations_length, TRAPS);
duke@435	129
duke@435	130	// Final setup
jcoomes@1374	131	unsigned int compute_oop_map_count(instanceKlassHandle super,
jcoomes@1374	132	unsigned int nonstatic_oop_count,
jcoomes@1374	133	int first_nonstatic_oop_offset);
jcoomes@1374	134	void fill_oop_maps(instanceKlassHandle k,
jcoomes@1374	135	unsigned int nonstatic_oop_map_count,
jcoomes@1374	136	int* nonstatic_oop_offsets,
jcoomes@1374	137	unsigned int* nonstatic_oop_counts);
duke@435	138	void set_precomputed_flags(instanceKlassHandle k);
duke@435	139	objArrayHandle compute_transitive_interfaces(instanceKlassHandle super,
duke@435	140	objArrayHandle local_ifs, TRAPS);
duke@435	141
duke@435	142	// Special handling for certain classes.
duke@435	143	// Add the "discovered" field to java.lang.ref.Reference if
duke@435	144	// it does not exist.
duke@435	145	void java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
duke@435	146	constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS);
duke@435	147	// Adjust the field allocation counts for java.lang.Class to add
duke@435	148	// fake fields.
duke@435	149	void java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
duke@435	150	FieldAllocationCount *fac_ptr, TRAPS);
duke@435	151	// Adjust the next_nonstatic_oop_offset to place the fake fields
duke@435	152	// before any Java fields.
duke@435	153	void java_lang_Class_fix_post(int* next_nonstatic_oop_offset);
jrose@1145	154	// Adjust the field allocation counts for java.dyn.MethodHandle to add
jrose@1145	155	// a fake address (void*) field.
jrose@1145	156	void java_dyn_MethodHandle_fix_pre(constantPoolHandle cp,
twisti@2264	157	typeArrayHandle fields,
jrose@1145	158	FieldAllocationCount *fac_ptr, TRAPS);
duke@435	159
duke@435	160	// Format checker methods
duke@435	161	void classfile_parse_error(const char* msg, TRAPS);
duke@435	162	void classfile_parse_error(const char* msg, int index, TRAPS);
duke@435	163	void classfile_parse_error(const char* msg, const char *name, TRAPS);
duke@435	164	void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
duke@435	165	inline void guarantee_property(bool b, const char* msg, TRAPS) {
duke@435	166	if (!b) { classfile_parse_error(msg, CHECK); }
duke@435	167	}
duke@435	168
duke@435	169	inline void assert_property(bool b, const char* msg, TRAPS) {
duke@435	170	#ifdef ASSERT
duke@435	171	if (!b) { fatal(msg); }
duke@435	172	#endif
duke@435	173	}
duke@435	174
duke@435	175	inline void check_property(bool property, const char* msg, int index, TRAPS) {
duke@435	176	if (_need_verify) {
duke@435	177	guarantee_property(property, msg, index, CHECK);
duke@435	178	} else {
duke@435	179	assert_property(property, msg, CHECK);
duke@435	180	}
duke@435	181	}
duke@435	182
duke@435	183	inline void check_property(bool property, const char* msg, TRAPS) {
duke@435	184	if (_need_verify) {
duke@435	185	guarantee_property(property, msg, CHECK);
duke@435	186	} else {
duke@435	187	assert_property(property, msg, CHECK);
duke@435	188	}
duke@435	189	}
duke@435	190
duke@435	191	inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
duke@435	192	if (!b) { classfile_parse_error(msg, index, CHECK); }
duke@435	193	}
duke@435	194	inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
duke@435	195	if (!b) { classfile_parse_error(msg, name, CHECK); }
duke@435	196	}
duke@435	197	inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
duke@435	198	if (!b) { classfile_parse_error(msg, index, name, CHECK); }
duke@435	199	}
duke@435	200
kamg@1941	201	void throwIllegalSignature(
kamg@1941	202	const char* type, symbolHandle name, symbolHandle sig, TRAPS);
kamg@1941	203
duke@435	204	bool is_supported_version(u2 major, u2 minor);
duke@435	205	bool has_illegal_visibility(jint flags);
duke@435	206
duke@435	207	void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
duke@435	208	void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
duke@435	209	void verify_legal_class_name(symbolHandle name, TRAPS);
duke@435	210	void verify_legal_field_name(symbolHandle name, TRAPS);
duke@435	211	void verify_legal_method_name(symbolHandle name, TRAPS);
duke@435	212	void verify_legal_field_signature(symbolHandle fieldname, symbolHandle signature, TRAPS);
duke@435	213	int verify_legal_method_signature(symbolHandle methodname, symbolHandle signature, TRAPS);
duke@435	214	void verify_legal_class_modifiers(jint flags, TRAPS);
duke@435	215	void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
duke@435	216	void verify_legal_method_modifiers(jint flags, bool is_interface, symbolHandle name, TRAPS);
duke@435	217	bool verify_unqualified_name(char* name, unsigned int length, int type);
duke@435	218	char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
duke@435	219	char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
duke@435	220
jrose@1145	221	bool is_anonymous() {
jrose@1145	222	assert(AnonymousClasses || _host_klass.is_null(), "");
jrose@1145	223	return _host_klass.not_null();
jrose@1145	224	}
jrose@866	225	bool has_cp_patch_at(int index) {
jrose@866	226	assert(AnonymousClasses, "");
jrose@866	227	assert(index >= 0, "oob");
jrose@866	228	return (_cp_patches != NULL
jrose@866	229	&& index < _cp_patches->length()
jrose@866	230	&& _cp_patches->adr_at(index)->not_null());
jrose@866	231	}
jrose@866	232	Handle cp_patch_at(int index) {
jrose@866	233	assert(has_cp_patch_at(index), "oob");
jrose@866	234	return _cp_patches->at(index);
jrose@866	235	}
jrose@866	236	Handle clear_cp_patch_at(int index) {
jrose@866	237	Handle patch = cp_patch_at(index);
jrose@866	238	_cp_patches->at_put(index, Handle());
jrose@866	239	assert(!has_cp_patch_at(index), "");
jrose@866	240	return patch;
jrose@866	241	}
jrose@866	242	void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
jrose@866	243
jrose@866	244	// Wrapper for constantTag.is_klass_[or_]reference.
jrose@866	245	// In older versions of the VM, klassOops cannot sneak into early phases of
jrose@866	246	// constant pool construction, but in later versions they can.
jrose@866	247	// %%% Let's phase out the old is_klass_reference.
jrose@866	248	bool is_klass_reference(constantPoolHandle cp, int index) {
jrose@866	249	return ((LinkWellKnownClasses || AnonymousClasses)
jrose@866	250	? cp->tag_at(index).is_klass_or_reference()
jrose@866	251	: cp->tag_at(index).is_klass_reference());
jrose@866	252	}
jrose@866	253
duke@435	254	public:
duke@435	255	// Constructor
duke@435	256	ClassFileParser(ClassFileStream* st) { set_stream(st); }
duke@435	257
duke@435	258	// Parse .class file and return new klassOop. The klassOop is not hooked up
duke@435	259	// to the system dictionary or any other structures, so a .class file can
duke@435	260	// be loaded several times if desired.
duke@435	261	// The system dictionary hookup is done by the caller.
duke@435	262	//
duke@435	263	// "parsed_name" is updated by this method, and is the name found
duke@435	264	// while parsing the stream.
duke@435	265	instanceKlassHandle parseClassFile(symbolHandle name,
duke@435	266	Handle class_loader,
duke@435	267	Handle protection_domain,
duke@435	268	symbolHandle& parsed_name,
acorn@1408	269	bool verify,
jrose@866	270	TRAPS) {
jrose@1145	271	KlassHandle no_host_klass;
acorn@1408	272	return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
jrose@866	273	}
jrose@866	274	instanceKlassHandle parseClassFile(symbolHandle name,
jrose@866	275	Handle class_loader,
jrose@866	276	Handle protection_domain,
jrose@1145	277	KlassHandle host_klass,
jrose@866	278	GrowableArray<Handle>* cp_patches,
jrose@866	279	symbolHandle& parsed_name,
acorn@1408	280	bool verify,
duke@435	281	TRAPS);
duke@435	282
duke@435	283	// Verifier checks
duke@435	284	static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
duke@435	285	static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
duke@435	286	static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
duke@435	287	static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
duke@435	288	};